/*
 * Sizzle CSS Selector Engine - v1.0
 *  Copyright 2009, The Dojo Foundation
 *  Released under the MIT, BSD, and GPL Licenses.
 *  More information: http://sizzlejs.com/
 *  http://wiki.github.com/jeresig/sizzle/
 *
 */
STK.register('core.dom.sizzle', function($){
	var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^\[\]]*\]|['"][^'"]*['"]|[^\[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?((?:.|\r|\n)*)/g, done = 0, toString = Object.prototype.toString, hasDuplicate = false, baseHasDuplicate = true;
	
	// Here we check if the JavaScript engine is using some sort of
	// optimization where it does not always call our comparision
	// function. If that is the case, discard the hasDuplicate value.
	//   Thus far that includes Google Chrome.
	[0, 0].sort(function(){
		baseHasDuplicate = false;
		return 0;
	});
	
	var Sizzle = function(selector, context, results, seed){
		results = results || [];
		context = context || document;
		
		var origContext = context;
		
		if (context.nodeType !== 1 && context.nodeType !== 9) {
			return [];
		}
		
		if (!selector || typeof selector !== "string") {
			return results;
		}
		
		var parts = [], m, set, checkSet, extra, prune = true, contextXML = Sizzle.isXML(context), soFar = selector, ret, cur, pop, i;
		
		// Reset the position of the chunker regexp (start from head)
		do {
			chunker.exec("");
			m = chunker.exec(soFar);
			
			if (m) {
				soFar = m[3];
				
				parts.push(m[1]);
				
				if (m[2]) {
					extra = m[3];
					break;
				}
			}
		}
		while (m);
		
		if (parts.length > 1 && origPOS.exec(selector)) {
			if (parts.length === 2 && Expr.relative[parts[0]]) {
				set = posProcess(parts[0] + parts[1], context);
			}
			else {
				set = Expr.relative[parts[0]] ? [context] : Sizzle(parts.shift(), context);
				
				while (parts.length) {
					selector = parts.shift();
					
					if (Expr.relative[selector]) {
						selector += parts.shift();
					}
					
					set = posProcess(selector, set);
				}
			}
		}
		else {
			// Take a shortcut and set the context if the root selector is an ID
			// (but not if it'll be faster if the inner selector is an ID)
			if (!seed && parts.length > 1 && context.nodeType === 9 && !contextXML &&
			Expr.match.ID.test(parts[0]) &&
			!Expr.match.ID.test(parts[parts.length - 1])) {
				ret = Sizzle.find(parts.shift(), context, contextXML);
				context = ret.expr ? Sizzle.filter(ret.expr, ret.set)[0] : ret.set[0];
			}
			
			if (context) {
				ret = seed ? {
					expr: parts.pop(),
					set: makeArray(seed)
				} : Sizzle.find(parts.pop(), parts.length === 1 && (parts[0] === "~" || parts[0] === "+") && context.parentNode ? context.parentNode : context, contextXML);
				set = ret.expr ? Sizzle.filter(ret.expr, ret.set) : ret.set;
				
				if (parts.length > 0) {
					checkSet = makeArray(set);
				}
				else {
					prune = false;
				}
				
				while (parts.length) {
					cur = parts.pop();
					pop = cur;
					
					if (!Expr.relative[cur]) {
						cur = "";
					}
					else {
						pop = parts.pop();
					}
					
					if (pop == null) {
						pop = context;
					}
					
					Expr.relative[cur](checkSet, pop, contextXML);
				}
			}
			else {
				checkSet = parts = [];
			}
		}
		
		if (!checkSet) {
			checkSet = set;
		}
		
		if (!checkSet) {
			Sizzle.error(cur || selector);
		}
		
		if (toString.call(checkSet) === "[object Array]") {
			if (!prune) {
				results.push.apply(results, checkSet);
			}
			else 
				if (context && context.nodeType === 1) {
					for (i = 0; checkSet[i] != null; i++) {
						if (checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && Sizzle.contains(context, checkSet[i]))) {
							results.push(set[i]);
						}
					}
				}
				else {
					for (i = 0; checkSet[i] != null; i++) {
						if (checkSet[i] && checkSet[i].nodeType === 1) {
							results.push(set[i]);
						}
					}
				}
		}
		else {
			makeArray(checkSet, results);
		}
		
		if (extra) {
			Sizzle(extra, origContext, results, seed);
			Sizzle.uniqueSort(results);
		}
		
		return results;
	};
	
	Sizzle.uniqueSort = function(results){
		if (sortOrder) {
			hasDuplicate = baseHasDuplicate;
			results.sort(sortOrder);
			
			if (hasDuplicate) {
				for (var i = 1; i < results.length; i++) {
					if (results[i] === results[i - 1]) {
						results.splice(i--, 1);
					}
				}
			}
		}
		
		return results;
	};
	
	Sizzle.matches = function(expr, set){
		return Sizzle(expr, null, null, set);
	};
	
	Sizzle.find = function(expr, context, isXML){
		var set;
		
		if (!expr) {
			return [];
		}
		
		for (var i = 0, l = Expr.order.length; i < l; i++) {
			var type = Expr.order[i], match;
			
			if ((match = Expr.leftMatch[type].exec(expr))) {
				var left = match[1];
				match.splice(1, 1);
				
				if (left.substr(left.length - 1) !== "\\") {
					match[1] = (match[1] || "").replace(/\\/g, "");
					set = Expr.find[type](match, context, isXML);
					if (set != null) {
						expr = expr.replace(Expr.match[type], "");
						break;
					}
				}
			}
		}
		
		if (!set) {
			set = context.getElementsByTagName("*");
		}
		
		return {
			set: set,
			expr: expr
		};
	};
	
	Sizzle.filter = function(expr, set, inplace, not){
		var old = expr, result = [], curLoop = set, match, anyFound, isXMLFilter = set && set[0] && Sizzle.isXML(set[0]);
		
		while (expr && set.length) {
			for (var type in Expr.filter) {
				if ((match = Expr.leftMatch[type].exec(expr)) != null && match[2]) {
					var filter = Expr.filter[type], found, item, left = match[1];
					anyFound = false;
					
					match.splice(1, 1);
					
					if (left.substr(left.length - 1) === "\\") {
						continue;
					}
					
					if (curLoop === result) {
						result = [];
					}
					
					if (Expr.preFilter[type]) {
						match = Expr.preFilter[type](match, curLoop, inplace, result, not, isXMLFilter);
						
						if (!match) {
							anyFound = found = true;
						}
						else 
							if (match === true) {
								continue;
							}
					}
					
					if (match) {
						for (var i = 0; (item = curLoop[i]) != null; i++) {
							if (item) {
								found = filter(item, match, i, curLoop);
								var pass = not ^ !!found;
								
								if (inplace && found != null) {
									if (pass) {
										anyFound = true;
									}
									else {
										curLoop[i] = false;
									}
								}
								else 
									if (pass) {
										result.push(item);
										anyFound = true;
									}
							}
						}
					}
					
					if (found !== undefined) {
						if (!inplace) {
							curLoop = result;
						}
						
						expr = expr.replace(Expr.match[type], "");
						
						if (!anyFound) {
							return [];
						}
						
						break;
					}
				}
			}
			
			// Improper expression
			if (expr === old) {
				if (anyFound == null) {
					Sizzle.error(expr);
				}
				else {
					break;
				}
			}
			
			old = expr;
		}
		
		return curLoop;
	};
	
	Sizzle.error = function(msg){
		throw "Syntax error, unrecognized expression: " + msg;
	};
	
	var Expr = {
		order: ["ID", "NAME", "TAG"],
		match: {
			ID: /#((?:[\w\u00c0-\uFFFF\-]|\\.)+)/,
			CLASS: /\.((?:[\w\u00c0-\uFFFF\-]|\\.)+)/,
			NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF\-]|\\.)+)['"]*\]/,
			ATTR: /\[\s*((?:[\w\u00c0-\uFFFF\-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,
			TAG: /^((?:[\w\u00c0-\uFFFF\*\-]|\\.)+)/,
			CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+\-]*)\))?/,
			POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^\-]|$)/,
			PSEUDO: /:((?:[\w\u00c0-\uFFFF\-]|\\.)+)(?:\((['"]?)((?:\([^\)]+\)|[^\(\)]*)+)\2\))?/
		},
		leftMatch: {},
		attrMap: {
			"class": "className",
			"for": "htmlFor"
		},
		attrHandle: {
			href: function(elem){
				return elem.getAttribute("href");
			}
		},
		relative: {
			"+": function(checkSet, part){
				var isPartStr = typeof part === "string", isTag = isPartStr && !/\W/.test(part), isPartStrNotTag = isPartStr && !isTag;
				
				if (isTag) {
					part = part.toLowerCase();
				}
				
				for (var i = 0, l = checkSet.length, elem; i < l; i++) {
					if ((elem = checkSet[i])) {
						while ((elem = elem.previousSibling) && elem.nodeType !== 1) {
						}
						
						checkSet[i] = isPartStrNotTag || elem && elem.nodeName.toLowerCase() === part ? elem || false : elem === part;
					}
				}
				
				if (isPartStrNotTag) {
					Sizzle.filter(part, checkSet, true);
				}
			},
			">": function(checkSet, part){
				var isPartStr = typeof part === "string", elem, i = 0, l = checkSet.length;
				
				if (isPartStr && !/\W/.test(part)) {
					part = part.toLowerCase();
					
					for (; i < l; i++) {
						elem = checkSet[i];
						if (elem) {
							var parent = elem.parentNode;
							checkSet[i] = parent.nodeName.toLowerCase() === part ? parent : false;
						}
					}
				}
				else {
					for (; i < l; i++) {
						elem = checkSet[i];
						if (elem) {
							checkSet[i] = isPartStr ? elem.parentNode : elem.parentNode === part;
						}
					}
					
					if (isPartStr) {
						Sizzle.filter(part, checkSet, true);
					}
				}
			},
			"": function(checkSet, part, isXML){
				var doneName = done++, checkFn = dirCheck, nodeCheck;
				
				if (typeof part === "string" && !/\W/.test(part)) {
					part = part.toLowerCase();
					nodeCheck = part;
					checkFn = dirNodeCheck;
				}
				
				checkFn("parentNode", part, doneName, checkSet, nodeCheck, isXML);
			},
			"~": function(checkSet, part, isXML){
				var doneName = done++, checkFn = dirCheck, nodeCheck;
				
				if (typeof part === "string" && !/\W/.test(part)) {
					part = part.toLowerCase();
					nodeCheck = part;
					checkFn = dirNodeCheck;
				}
				
				checkFn("previousSibling", part, doneName, checkSet, nodeCheck, isXML);
			}
		},
		find: {
			ID: function(match, context, isXML){
				if (typeof context.getElementById !== "undefined" && !isXML) {
					var m = context.getElementById(match[1]);
					return m ? [m] : [];
				}
			},
			NAME: function(match, context){
				if (typeof context.getElementsByName !== "undefined") {
					var ret = [], results = context.getElementsByName(match[1]);
					
					for (var i = 0, l = results.length; i < l; i++) {
						if (results[i].getAttribute("name") === match[1]) {
							ret.push(results[i]);
						}
					}
					
					return ret.length === 0 ? null : ret;
				}
			},
			TAG: function(match, context){
				return context.getElementsByTagName(match[1]);
			}
		},
		preFilter: {
			CLASS: function(match, curLoop, inplace, result, not, isXML){
				match = " " + match[1].replace(/\\/g, "") + " ";
				
				if (isXML) {
					return match;
				}
				
				for (var i = 0, elem; (elem = curLoop[i]) != null; i++) {
					if (elem) {
						if (not ^ (elem.className && (" " + elem.className + " ").replace(/[\t\n]/g, " ").indexOf(match) >= 0)) {
							if (!inplace) {
								result.push(elem);
							}
						}
						else 
							if (inplace) {
								curLoop[i] = false;
							}
					}
				}
				
				return false;
			},
			ID: function(match){
				return match[1].replace(/\\/g, "");
			},
			TAG: function(match, curLoop){
				return match[1].toLowerCase();
			},
			CHILD: function(match){
				if (match[1] === "nth") {
					// parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
					var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(match[2] === "even" && "2n" || match[2] === "odd" && "2n+1" ||
					!/\D/.test(match[2]) && "0n+" + match[2] ||
					match[2]);
					
					// calculate the numbers (first)n+(last) including if they are negative
					match[2] = (test[1] + (test[2] || 1)) - 0;
					match[3] = test[3] - 0;
				}
				
				// TODO: Move to normal caching system
				match[0] = done++;
				
				return match;
			},
			ATTR: function(match, curLoop, inplace, result, not, isXML){
				var name = match[1].replace(/\\/g, "");
				
				if (!isXML && Expr.attrMap[name]) {
					match[1] = Expr.attrMap[name];
				}
				
				if (match[2] === "~=") {
					match[4] = " " + match[4] + " ";
				}
				
				return match;
			},
			PSEUDO: function(match, curLoop, inplace, result, not){
				if (match[1] === "not") {
					// If we're dealing with a complex expression, or a simple one
					if ((chunker.exec(match[3]) || "").length > 1 || /^\w/.test(match[3])) {
						match[3] = Sizzle(match[3], null, null, curLoop);
					}
					else {
						var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);
						if (!inplace) {
							result.push.apply(result, ret);
						}
						return false;
					}
				}
				else 
					if (Expr.match.POS.test(match[0]) || Expr.match.CHILD.test(match[0])) {
						return true;
					}
				
				return match;
			},
			POS: function(match){
				match.unshift(true);
				return match;
			}
		},
		filters: {
			enabled: function(elem){
				return elem.disabled === false && elem.type !== "hidden";
			},
			disabled: function(elem){
				return elem.disabled === true;
			},
			checked: function(elem){
				return elem.checked === true;
			},
			selected: function(elem){
				// Accessing this property makes selected-by-default
				// options in Safari work properly
				elem.parentNode.selectedIndex;
				return elem.selected === true;
			},
			parent: function(elem){
				return !!elem.firstChild;
			},
			empty: function(elem){
				return !elem.firstChild;
			},
			has: function(elem, i, match){
				return !!Sizzle(match[3], elem).length;
			},
			header: function(elem){
				return (/h\d/i).test(elem.nodeName);
			},
			text: function(elem){
				return "text" === elem.type;
			},
			radio: function(elem){
				return "radio" === elem.type;
			},
			checkbox: function(elem){
				return "checkbox" === elem.type;
			},
			file: function(elem){
				return "file" === elem.type;
			},
			password: function(elem){
				return "password" === elem.type;
			},
			submit: function(elem){
				return "submit" === elem.type;
			},
			image: function(elem){
				return "image" === elem.type;
			},
			reset: function(elem){
				return "reset" === elem.type;
			},
			button: function(elem){
				return "button" === elem.type || elem.nodeName.toLowerCase() === "button";
			},
			input: function(elem){
				return (/input|select|textarea|button/i).test(elem.nodeName);
			}
		},
		setFilters: {
			first: function(elem, i){
				return i === 0;
			},
			last: function(elem, i, match, array){
				return i === array.length - 1;
			},
			even: function(elem, i){
				return i % 2 === 0;
			},
			odd: function(elem, i){
				return i % 2 === 1;
			},
			lt: function(elem, i, match){
				return i < match[3] - 0;
			},
			gt: function(elem, i, match){
				return i > match[3] - 0;
			},
			nth: function(elem, i, match){
				return match[3] - 0 === i;
			},
			eq: function(elem, i, match){
				return match[3] - 0 === i;
			}
		},
		filter: {
			PSEUDO: function(elem, match, i, array){
				var name = match[1], filter = Expr.filters[name];
				
				if (filter) {
					return filter(elem, i, match, array);
				}
				else 
					if (name === "contains") {
						return (elem.textContent || elem.innerText || Sizzle.getText([elem]) || "").indexOf(match[3]) >= 0;
					}
					else 
						if (name === "not") {
							var not = match[3];
							
							for (var j = 0, l = not.length; j < l; j++) {
								if (not[j] === elem) {
									return false;
								}
							}
							
							return true;
						}
						else {
							Sizzle.error("Syntax error, unrecognized expression: " + name);
						}
			},
			CHILD: function(elem, match){
				var type = match[1], node = elem;
				switch (type) {
					case 'only':
					case 'first':
						while ((node = node.previousSibling)) {
							if (node.nodeType === 1) {
								return false;
							}
						}
						if (type === "first") {
							return true;
						}
						node = elem;
					case 'last':
						while ((node = node.nextSibling)) {
							if (node.nodeType === 1) {
								return false;
							}
						}
						return true;
					case 'nth':
						var first = match[2], last = match[3];
						
						if (first === 1 && last === 0) {
							return true;
						}
						
						var doneName = match[0], parent = elem.parentNode;
						
						if (parent && (parent.sizcache !== doneName || !elem.nodeIndex)) {
							var count = 0;
							for (node = parent.firstChild; node; node = node.nextSibling) {
								if (node.nodeType === 1) {
									node.nodeIndex = ++count;
								}
							}
							parent.sizcache = doneName;
						}
						
						var diff = elem.nodeIndex - last;
						if (first === 0) {
							return diff === 0;
						}
						else {
							return (diff % first === 0 && diff / first >= 0);
						}
				}
			},
			ID: function(elem, match){
				return elem.nodeType === 1 && elem.getAttribute("id") === match;
			},
			TAG: function(elem, match){
				return (match === "*" && elem.nodeType === 1) || elem.nodeName.toLowerCase() === match;
			},
			CLASS: function(elem, match){
				return (" " + (elem.className || elem.getAttribute("class")) + " ").indexOf(match) >
				-1;
			},
			ATTR: function(elem, match){
				var name = match[1], result = Expr.attrHandle[name] ? Expr.attrHandle[name](elem) : elem[name] != null ? elem[name] : elem.getAttribute(name), value = result + "", type = match[2], check = match[4];
				
				return result == null ? type === "!=" : type === "=" ? value === check : type === "*=" ? value.indexOf(check) >= 0 : type === "~=" ? (" " + value + " ").indexOf(check) >= 0 : !check ? value && result !== false : type === "!=" ? value !== check : type === "^=" ? value.indexOf(check) === 0 : type === "$=" ? value.substr(value.length - check.length) === check : type === "|=" ? value === check || value.substr(0, check.length + 1) === check + "-" : false;
			},
			POS: function(elem, match, i, array){
				var name = match[2], filter = Expr.setFilters[name];
				
				if (filter) {
					return filter(elem, i, match, array);
				}
			}
		}
	};
	Sizzle.selectors = Expr;
	
	var origPOS = Expr.match.POS, fescape = function(all, num){
		return "\\" + (num - 0 + 1);
	};
	
	for (var type in Expr.match) {
		Expr.match[type] = new RegExp(Expr.match[type].source + (/(?![^\[]*\])(?![^\(]*\))/.source));
		Expr.leftMatch[type] = new RegExp(/(^(?:.|\r|\n)*?)/.source + Expr.match[type].source.replace(/\\(\d+)/g, fescape));
	}
	
	var makeArray = function(array, results){
		array = Array.prototype.slice.call(array, 0);
		
		if (results) {
			results.push.apply(results, array);
			return results;
		}
		
		return array;
	};
	
	// Perform a simple check to determine if the browser is capable of
	// converting a NodeList to an array using builtin methods.
	// Also verifies that the returned array holds DOM nodes
	// (which is not the case in the Blackberry browser)
	try {
		Array.prototype.slice.call(document.documentElement.childNodes, 0)[0].nodeType;
		
		// Provide a fallback method if it does not work
	} 
	catch (e) {
		makeArray = function(array, results){
			var ret = results || [], i = 0;
			
			if (toString.call(array) === "[object Array]") {
				Array.prototype.push.apply(ret, array);
			}
			else {
				if (typeof array.length === "number") {
					for (var l = array.length; i < l; i++) {
						ret.push(array[i]);
					}
				}
				else {
					for (; array[i]; i++) {
						ret.push(array[i]);
					}
				}
			}
			
			return ret;
		};
	}
	
	var sortOrder;
	
	if (document.documentElement.compareDocumentPosition) {
		sortOrder = function(a, b){
			if (!a.compareDocumentPosition || !b.compareDocumentPosition) {
				if (a == b) {
					hasDuplicate = true;
				}
				return a.compareDocumentPosition ? -1 : 1;
			}
			
			var ret = a.compareDocumentPosition(b) & 4 ? -1 : a === b ? 0 : 1;
			if (ret === 0) {
				hasDuplicate = true;
			}
			return ret;
		};
	}
	else 
		if ("sourceIndex" in document.documentElement) {
			sortOrder = function(a, b){
				if (!a.sourceIndex || !b.sourceIndex) {
					if (a == b) {
						hasDuplicate = true;
					}
					return a.sourceIndex ? -1 : 1;
				}
				
				var ret = a.sourceIndex - b.sourceIndex;
				if (ret === 0) {
					hasDuplicate = true;
				}
				return ret;
			};
		}
		else 
			if (document.createRange) {
				sortOrder = function(a, b){
					if (!a.ownerDocument || !b.ownerDocument) {
						if (a == b) {
							hasDuplicate = true;
						}
						return a.ownerDocument ? -1 : 1;
					}
					
					var aRange = a.ownerDocument.createRange(), bRange = b.ownerDocument.createRange();
					aRange.setStart(a, 0);
					aRange.setEnd(a, 0);
					bRange.setStart(b, 0);
					bRange.setEnd(b, 0);
					var ret = aRange.compareBoundaryPoints(Range.START_TO_END, bRange);
					if (ret === 0) {
						hasDuplicate = true;
					}
					return ret;
				};
			}
	
	// Utility function for retreiving the text value of an array of DOM nodes
	Sizzle.getText = function(elems){
		var ret = "", elem;
		
		for (var i = 0; elems[i]; i++) {
			elem = elems[i];
			
			// Get the text from text nodes and CDATA nodes
			if (elem.nodeType === 3 || elem.nodeType === 4) {
				ret += elem.nodeValue;
				
				// Traverse everything else, except comment nodes
			}
			else 
				if (elem.nodeType !== 8) {
					ret += Sizzle.getText(elem.childNodes);
				}
		}
		
		return ret;
	};
	
	// Check to see if the browser returns elements by name when
	// querying by getElementById (and provide a workaround)
	(function(){
		// We're going to inject a fake input element with a specified name
		var form = document.createElement("div"), id = "script" + (new Date()).getTime();
		form.innerHTML = "<a name='" + id + "'/>";
		
		// Inject it into the root element, check its status, and remove it quickly
		var root = document.documentElement;
		root.insertBefore(form, root.firstChild);
		
		// The workaround has to do additional checks after a getElementById
		// Which slows things down for other browsers (hence the branching)
		if (document.getElementById(id)) {
			Expr.find.ID = function(match, context, isXML){
				if (typeof context.getElementById !== "undefined" && !isXML) {
					var m = context.getElementById(match[1]);
					return m ? m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
				}
			};
			
			Expr.filter.ID = function(elem, match){
				var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id");
				return elem.nodeType === 1 && node && node.nodeValue === match;
			};
		}
		
		root.removeChild(form);
		root = form = null; // release memory in IE
	})();
	
	(function(){
		// Check to see if the browser returns only elements
		// when doing getElementsByTagName("*")
		
		// Create a fake element
		var div = document.createElement("div");
		div.appendChild(document.createComment(""));
		
		// Make sure no comments are found
		if (div.getElementsByTagName("*").length > 0) {
			Expr.find.TAG = function(match, context){
				var results = context.getElementsByTagName(match[1]);
				
				// Filter out possible comments
				if (match[1] === "*") {
					var tmp = [];
					
					for (var i = 0; results[i]; i++) {
						if (results[i].nodeType === 1) {
							tmp.push(results[i]);
						}
					}
					
					results = tmp;
				}
				
				return results;
			};
		}
		
		// Check to see if an attribute returns normalized href attributes
		div.innerHTML = "<a href='#'></a>";
		if (div.firstChild && typeof div.firstChild.getAttribute !== "undefined" &&
		div.firstChild.getAttribute("href") !== "#") {
			Expr.attrHandle.href = function(elem){
				return elem.getAttribute("href", 2);
			};
		}
		
		div = null; // release memory in IE
	})();
	
	if (document.querySelectorAll) {
		(function(){
			var oldSizzle = Sizzle, div = document.createElement("div");
			div.innerHTML = "<p class='TEST'></p>";
			
			// Safari can't handle uppercase or unicode characters when
			// in quirks mode.
			if (div.querySelectorAll && div.querySelectorAll(".TEST").length === 0) {
				return;
			}
			Sizzle = function(query, context, extra, seed){
				context = context || document;
				
				// Only use querySelectorAll on non-XML documents
				// (ID selectors don't work in non-HTML documents)
				if (!seed && context.nodeType === 9 && !Sizzle.isXML(context)) {
					try {
						return makeArray(context.querySelectorAll(query), extra);
					} 
					catch (e) {
					}
				}
				
				return oldSizzle(query, context, extra, seed);
			};
			
			for (var prop in oldSizzle) {
				Sizzle[prop] = oldSizzle[prop];
			}
			
			div = null; // release memory in IE
		})();
	}
	
	(function(){
		var div = document.createElement("div");
		
		div.innerHTML = "<div class='test e'></div><div class='test'></div>";
		
		// Opera can't find a second classname (in 9.6)
		// Also, make sure that getElementsByClassName actually exists
		if (!div.getElementsByClassName || div.getElementsByClassName("e").length === 0) {
			return;
		}
		
		// Safari caches class attributes, doesn't catch changes (in 3.2)
		div.lastChild.className = "e";
		
		if (div.getElementsByClassName("e").length === 1) {
			return;
		}
		
		Expr.order.splice(1, 0, "CLASS");
		Expr.find.CLASS = function(match, context, isXML){
			if (typeof context.getElementsByClassName !== "undefined" && !isXML) {
				return context.getElementsByClassName(match[1]);
			}
		};
		
		div = null; // release memory in IE
	})();
	
	function dirNodeCheck(dir, cur, doneName, checkSet, nodeCheck, isXML){
		for (var i = 0, l = checkSet.length; i < l; i++) {
			var elem = checkSet[i];
			if (elem) {
				elem = elem[dir];
				var match = false;
				
				while (elem) {
					if (elem.sizcache === doneName) {
						match = checkSet[elem.sizset];
						break;
					}
					
					if (elem.nodeType === 1 && !isXML) {
						elem.sizcache = doneName;
						elem.sizset = i;
					}
					
					if (elem.nodeName.toLowerCase() === cur) {
						match = elem;
						break;
					}
					
					elem = elem[dir];
				}
				
				checkSet[i] = match;
			}
		}
	}
	
	function dirCheck(dir, cur, doneName, checkSet, nodeCheck, isXML){
		for (var i = 0, l = checkSet.length; i < l; i++) {
			var elem = checkSet[i];
			if (elem) {
				elem = elem[dir];
				var match = false;
				
				while (elem) {
					if (elem.sizcache === doneName) {
						match = checkSet[elem.sizset];
						break;
					}
					
					if (elem.nodeType === 1) {
						if (!isXML) {
							elem.sizcache = doneName;
							elem.sizset = i;
						}
						if (typeof cur !== "string") {
							if (elem === cur) {
								match = true;
								break;
							}
							
						}
						else 
							if (Sizzle.filter(cur, [elem]).length > 0) {
								match = elem;
								break;
							}
					}
					
					elem = elem[dir];
				}
				
				checkSet[i] = match;
			}
		}
	}
	
	Sizzle.contains = document.compareDocumentPosition ? function(a, b){
		return !!(a.compareDocumentPosition(b) & 16);
	}
 : function(a, b){
		return a !== b && (a.contains ? a.contains(b) : true);
	};
	
	Sizzle.isXML = function(elem){
		// documentElement is verified for cases where it doesn't yet exist
		// (such as loading iframes in IE - #4833) 
		var documentElement = (elem ? elem.ownerDocument || elem : 0).documentElement;
		return documentElement ? documentElement.nodeName !== "HTML" : false;
	};
	
	var posProcess = function(selector, context){
		var tmpSet = [], later = "", match, root = context.nodeType ? [context] : context;
		
		// Position selectors must be done after the filter
		// And so must :not(positional) so we move all PSEUDOs to the end
		while ((match = Expr.match.PSEUDO.exec(selector))) {
			later += match[0];
			selector = selector.replace(Expr.match.PSEUDO, "");
		}
		
		selector = Expr.relative[selector] ? selector + "*" : selector;
		
		for (var i = 0, l = root.length; i < l; i++) {
			Sizzle(selector, root[i], tmpSet);
		}
		
		return Sizzle.filter(later, tmpSet);
	};
	return Sizzle;
});
